The earliest medicine balls were probably used by ancient persian athletes to increase strength and endurance. These early ones used at least 3000 years ago were usually sand-filled animal bladders. You will find references in later texts to the use of medicine balls advocated by hippocrates, the father of medicine, about 2500 years ago. He recommended the use of round animal skins, which could also be filled with sand, as a way of training athletes or helping them recover from injuries.
There are many headphones that focus on sports, but most are in-ear or on-ear designs, and there are very few over-ear sports headphones available. In the eyes of under armour, this became a market that could be explored.
Now go to the gym for exercise seems to have become a way for people to pursue weight loss, i do not know since when, many office workers after work is no longer choose to lie still at home or go out to eat and drink, but choose to go to the gym after dinner card fitness, the reason for choosing to go to the gym to exercise, on the one hand, there is a special person to guide, on the other hand, fitness equipment is also more.
Fitness for health, but many fitness novice partners in fitness, often due to the lack of fitness knowledge, did not do the necessary preparation work and lead to physical injury, such as running a broken foot, the first time running a one-time run too long to cause knee pain and other phenomena. Experienced fitness people tell us that fitness is not only to have the correct posture, but also to prepare some of the necessary external fitness supplies. There is not a saying that "Fitness go, equipment first" It, hahaha.